SOLAR STORMS VEER OFF COURSE: Researchers using data from NASA's STEREO spacecraft have found that solar storms don't always travel in a straight line. This adds a surprising new twist to the science of space weather forecasting. Get the full story from Science@NASA.

MOONLIT AURORAS: A solar wind stream is buffeting Earth's magnetic field and causing auroras around the Arctic Circle. "The Super Harvest Moon was so bright that the Northern Lights were difficult to see," reports Yuichi Takasaka of Yellowknife in the Northwest Territories of Canada. "But from time to time they did make an appearance." He took this picture on Sept. 23rd using a Canon EOS 5D:

NOAA forecasters estimate a 30% chance of more geomagnetic activity during the next 24 hours as the solar wind continues to blow. Unfortunately, the Harvest Moon will continue to shine as well, overwhelming all but the most intense auroras.

News Flash: The Canadian Space Agency has just set up a camera in Yellowknife to broadcast the aurora borealis to the general public. It's part of a 5-year educational initiative to raise awareness of space weather and the sun's influence on Earth. Click here for live views.

HARVEST SURF: Far from the Arctic circle, the Harvest Moon is having a very different effect. "In Waikiki, a full Moon means more time to surf," reports Carey Johnson from Hawaii. "The feeling of catching a wave you can barely see is definitely exhilarating."

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On September 24, 2010 there were 1145 potentially hazardous asteroids.